Barking-machine.



J. A DE CEW.

BARKING MACHINE APPLICATION FILED MAYs: I915. Patentecl July 17, 191? J. A. DE CEW. B ARKING MACHINE. APPLICATION FILED MAY 5, I916.

Patented July 17, 1917.

2 SHEETS-SHEET 2.

25 "a. w o

BARKING-MACHINE.

Application filed May 5, 1916. Serial No. 95,621.

To all 'whom it may concern:

Be it known that I, JUDSON A. DE Cnw, a subject of the King of Great Britain, and

resident of the city of Montreal, in the Prov- I ince ofQuebec and Dominion of Canada, have invented certain new and useful Improvements in Barking-Machines, of which the following is a full, clear, and exact description.

This invention relates to improvements in barking machines, and the object is to provide an apparatus for removing bark from logs intended for use as pulp wood, working as nearly as possible automatically and arranged for discharge of the bark with a minimum of trouble.

The device consists essentially of one or more floats or rafts having thereon a suitable framework supporting a revolving drum and a loading apparatus.

In the drawings which illustrate the invention:

Figure 1 is a plan view of the device.

Fig. 2 is a side elevation.

' Fig. 3 is a front elevation.

Fig. 4 is a partial longitudinal section of the drum showing the drive.

Fig. 5 is a half combined end elevation and cross section showingthe bark cutters.

Fig. 6 is an end elevation of the bark slitters on an enlarged scale.

Fig. 7 is a side elevation of the slitting device.

Fig. 8 is a partial view' of a modification.

Referring more particularly to the drawings, 11 designates a float or floats arranged with an opening 12, which is straddled by a suitable framework 13, containing a revoluble drum or cage 14, arranged on a slight incline, as shown in Fig. 2. i A source of 'power 15 is mounted at a suitable point on the framework, andis suitably gea d to a shaft 16, whichdrives the drum by means of a plurality of toothed sprocket fchains 17. At the end of the framework adjacent the elevated end of the drum, a boom 18'is provided, from the end of which an elevator frame 19 is suitably suspended, having a constantly moving toothed chain 20, driven by suitable'gearing from the shaft 16. The

lower end of this elevator is submerged in Specification of Letters Patent.

cut the bark'longitudinally.

Patented July it, rare.

the manner well known in connection with saw mills, so that logs may be floated to the lower end of the elevator and will be carried up thereby and discharged into the drum.

The drum consists of a plurality of longltudinal parallel bars 21 of any suitable section, but preferably square, secured in position by 'a suitable number of rings 22. These rings, in addition to holding the bars in position, form tracks upon which the drum rotates, and by which it is supported upon rollers in the well known manner. The bars may be fixed or revoluble in the rings as desired. The teeth of the drive chains 17 may engage between the bars, which will act as gear teeth, but preferably engage a sprocket ring 22 fixed to one of the rings 22, as clearly shown in Fig. 4. A suitable number of additional rings 24 are provided which project a suitable dis tance within the bars and are sharpened to a suitable cutting edge 25. Intermediate these rings 24, additional rings 26 are provided having teeth 27 adapted to engage the bark of a log. The drum is held together by longitudinal bolts 28outside the bars, passing -through the rings 22, 21 and 26 and holding them in place by means of fillers 29 and diagonal braces 30. At the top of the elevator, cutting knives 31 of any suitable type are provided. These knives are preferably of the double bladed rotary type, shown in Figs. 6 and 7, and are mounted in the sides of the elevator in such posi tionthat they will engage and slit the bark of either large or small logs, as clearly shown in Fig. 6. Mounted above the knives 31 is an additional slitting knife 32 carried on a weighted lever 33, the free extremity of which extends downwardly a suitable distance and then slopes gradually upward.

The operation of the device is substantially as follows :As a log is brought up the elevator, the bark is longitudinally cut, torn or perforated to a certain extent by the toothed elevator chain. In addition, the log is forced between the cutters 31, which Upon being discharged into the revolving drum, the log is carried partially around by the drum, owing to the toothed rings 26. but at agpei tain As the drum revolves continuously, the log repeats this operation, and is in addition continually battered against the comparatively sharp edges of the'bars 21, which operate to knock, peel or grind ofi the bark, the smaller fragments of which at once fall through the float opening 12 into the water, and are carried away, while. the larger fragments are broken up and later fall from the drum into the water, and are also carried away. Owing to the slight inclination of the drum, the logs work gradually toward cient.

the lower end, from which they are discharged thoroughly freed of snark. The cutters 31 previously mentioned in this paragraph are so positioned that with the cutter 32 they will slit the bark of any ordinary sized log at approximately equal distances apart. Small logs will engage the lower blade of each cutter, while large logs will engage the upper blade, as clearly shown in Fig. 6. After a log has passed, the floating knife 32 drops. The next log coming up the chute passes under the inclined end of the arm 33, and thus raises the knife, so that the same does not catch on the end of the log.

The device is'simple, inexpensive and efli- In districts where it is not permissible todischarge bark into the rivers, suitable scows may be floated into the opening 12 and removed when full.

Having thus described my invention, what I claim is 1. Adoarking machine, comprising a pair of spaced floats, a frame connecting said floats, a revoluble barking drum mounted in the frame above the space between the floats whereby refuse falls direct from the drum into the Water, and an elevator arranged 130 convey logs from the water and discharge same into the drum.

2. A barking machine, comprising a revolving drum, circumferential knives there in, circumferential log carrying means in the drum, a log feeding device, and longitudinal bark cutting means in said feeding device.

' 3 In a barking machine, a revolving drum, a toothed member in said drum ar- I ranged'to increase and accelerate rolling of logs in thedrum, and a knife in the drum disposed to cut the bark of logs circumferentially during rolling thereof.

4. In a barking machine, a revolving drum, a toothed member in said drum arranged to increase and accelerate rolling -of logs in the drum, a knife in the drum dis posed tocut the bark of logs circumferentially during rolling thereof, a log feeding device for said drum, and means carried by said feeding device arranged to cut the bark of logs longitudinally prior to delivery into the drum.

5. In a barking machine, a drum built up of a plurality of parallel bars, and supporting rings therefor, and toothed drive chains for said drum' having the teeth thereof engaging between the bars of the drum.

6. In a barking machine, a longitudinally barred drum, toothed drive chains for said drum, the bars of the drum being arranged to form sprocket teeth for the engagement of the drive chains.

7. In a barking machine, a revoluble drum comprising a plurality of longitudinal bars, a plurality of supporting rings for said bars forming drum supporting tracks, a ring carried by said bars presenting a cutting edge on the inner surface ofthe drum, and a ring carried by said bars presenting a toothed edge on the inner surface of the drum.

8. In a barking machine, a drum comprising a plurality of longitudinal parallel bars polygonal in cross section, rings revolubly supporting said bars and forming drum supporting tracks, a ring carried by said bars having a toothed log transporting edge presented on'the inner surface of t e-drum, a ring carried by the bars having a bark cutting edge presented on the inner surface of the drum, rollers engagin the track rings of said drum, drum revo ving means, and

means for longitudinally cutting the bark of logs prior to delivery into the .drum.

9. n a barking machine, a float, a framework thereon, a barking drum mounted on an incline in said framework comprising a plurality of longitudinal bars, a plurality of rings supporting said bars, rollers mounted in the framework above and below the drum engaging said rings for the support drum, means for feeding logs into the drum,

and bark slitting means positioned in the path of logs enterin the drum and arranged to slit bark longitu inally by reason of log movement, said slitting means being arranged to variably engage and slit the bark of diiferent sized logs in more than two, lines hhides thereof so sp'aced that the bark of 10 approximately equidistant around the logs 6th small and large logs will be slit apcircumference. proxinmtely at uniform distances apart.

1.1. InE1barkingmachine,abzu'kingdrum, "In witness whereof, I have hereunto set 5 means for feeding loge thereinto, a, pluraliny hand, impresence of two Witnesses.

ity of double blade cutters anguhu'ly dis- .JUDSON A. DE CEW. posed in the path of the logs, and additie al- Witnesses: cutters flexibly mounted in the path of the I "FREDERICK B. BROWN, log, seidmcutters being s 0,disp0sed and the P. M. RUSHMORE. 

